A5057136353- Superconducting Materials and Applications
- Magnetic confinement fusion research
- Nuclear reactor physics and engineering
- Ultrasonics and Acoustic Wave Propagation
- Material Properties and Failure Mechanisms
- Fusion materials and technologies
- Nuclear Physics and Applications
- Engineering Diagnostics and Reliability
- Geophysical Methods and Applications
- Metallurgy and Material Forming
- Nuclear and radioactivity studies
- Nuclear Materials and Properties
- Industrial Engineering and Technologies
- Elasticity and Wave Propagation
- Advanced Manufacturing and Logistics Optimization
- Thermography and Photoacoustic Techniques
- Non-Destructive Testing Techniques
- Acoustic Wave Phenomena Research
- Metal Forming Simulation Techniques
- Radiation Detection and Scintillator Technologies
- Geotechnical and Geomechanical Engineering
- Metal Alloys Wear and Properties
- Advanced Power Generation Technologies
- Thermodynamic and Structural Properties of Metals and Alloys
- Engineering Technology and Methodologies
Peter the Great St. Petersburg Polytechnic University
2012-2024
Budker Institute of Nuclear Physics
2022
Siberian Branch of the Russian Academy of Sciences
2022
Novosibirsk State Technical University
2022
Institute of Applied Mathematics and Mechanics
2017
A divertor Thomson scattering (TS) system being developed for ITER has incorporated proven solutions from currently available TS systems. On the other hand any diagnostic to operate in a hostile environment and very restricted access geometry. Therefore operation an of intensive stray light, plasma background radiation, necessity meet requirement using only 20 mm gap between cassettes diagnosis as well measure temperatures low 1 eV severely constrain design. The challenging this novel which...
The behavior of acoustic anisotropy and the longitudinal wave velocity in case multiaxial stress-strain state plate under inelastic deformation has been studied experimentally. had a stress concentrator form central hole. results for several levels, finite element analysis active stresses were presented. qualitative agreement between calculated fields distribution was revealed. It found that absolute magnitude maximum fell on areas with biggest near concentrator. supposed non-uniform...
The paper studies the applicability of acoustoelasticity method to estimation strain-stress state under cyclic loading. It has been found that uniform distributions acoustic anisotropy along working part sample and velocities longitudinal transverse ultrasonic waves become substantially non-uniform with an increase in number stress cycles. Moreover, largest absolute values fell on points plastic deformations, particular, area dispersion. effect was being recorded from early stages loading...
The current integration state of ITER Equatorial Port #11 (EP#11) is described. This port the first plasma and thus phase close to final stage. new modular design neutron shielding implemented in Diagnostic modules' (DSM) construction achieve maximum efficiency within weight restrictions keeping fully operable tenant diagnostics systems. same approach was applied Interspace structure frame allow safe hand-on maintenance near highly activated components. iteration engineering calculations,...
The article is concerned with the possibilities of application standard method for measuring acoustic anisotropy to estimation degree plastic deformation. Solutions problem propagation a sound wave in an isotropic elastic-plastic material are obtained and analyzed. dependences velocity longitudinal transverse waves different polarization on strain derived. It shown theoretically experimentally that absolute value has monotonic dependence magnitude, while demonstrates nonlinear non-monotonic...
This paper is dedicated to finite-element modeling (FEM) of elastic waves caused by the work a piezoactuator. For this purpose, mathematical model 'elastic layer—piezoelectric element' system has been developed. In terms model, simultaneous solution piezoelectricity and solid-mechanics equations was employed. allowed us describe propagation process high-frequency mechanical vibrations application probing electrical pulse electrodes piezoelectric element (the occur in layer) reproduce...
Abstract The challenges of a large-scale mirror design for the in-vessel collection system ITER divertor Thomson scattering (DTS) are under consideration. These mirrors located out-of-line vision fusion plasma (so called ‘second mirrors’) with high-reflective Ag-based coating. paper outlines: approaches providing optical surface shape and angular position stability; Ag coating applicability environment, including resistance to accidental steam ingress. proposed solutions may also appear be...
The problem of maximum stresses estimation in the weld metal, where direct measurements are not possible due to influence metal structure on measurement error, was solved. features welding joints manufacturing technology also determined. 
 We use several reference welded pipelines at nuclear power plants our studies. Instrumental acoustoelasticity parameters and adjacent areas base used together with computational modeling residual distributions.
 Results obtained demonstrate that...